Lanxon writes "Deep inside the Swiss Alps, a former nuclear bunker is now the ultimate hiding place for the world's most sensitive secrets — the Swiss Fort Knox. In a lengthy feature, Wired gains access to the server farm designed to survive a full-scale military attack. From the article: 'As we punch our codes at the checkpoint, the yellow door opens into what looks like a city of server towers, their green LEDs flickering as a technician in a white jumpsuit runs diagnostic checks. [Later], we are in a dimly lit tunnel next to what looks like a metal oven door carved into the side of the rock. "These are expansion rooms in case you have an atomic explosion outside," Christoph Oschwald, a retired Swiss paratrooper turned contractor, says. The thinking behind the rooms, he explains, is that if there were a nuclear explosion, the rush of high-pressure air would fill them through vents in the opposite side. Then, the vents would snap shut, trapping the air before it had a chance of damaging the fortress. "There is a lot of protection you can't see," he says. We stroll past an intricate network of insulated pipelines that carry water up from the underground glacial lake to the cooling system.'"